package com.example.john.recyclerviewtest227lsy;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import java.util.List;

/**
 * Created by BYS on 2017/4/12.
 */

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {

    private Context context;//上下文
    private LayoutInflater layoutInflater;//动态加载布局
    private List<ArticleBean> list;
    //自定义构造方法，传递上下文
    public MyAdapter(Context context) {
        this.context=context;
        layoutInflater=LayoutInflater.from(this.context);
    }
    //自定义：传递数据源
    public void setList(List<ArticleBean> list){
        this.list=list;
    }
    //自定义：ViewHolder子类
    public class ViewHolder extends RecyclerView.ViewHolder {
        ImageView imageView;
        TextView tvtitle,tvdescript,tvtime;
        Button button;
        public ViewHolder(View itemView) {
            super(itemView);
            imageView=(ImageView) itemView.findViewById(R.id.imageView);
            tvtitle=(TextView) itemView.findViewById(R.id.textView);
            tvdescript=(TextView) itemView.findViewById(R.id.textView2);
            tvtime=(TextView) itemView.findViewById(R.id.textView3);
            button=(Button) itemView.findViewById(R.id.button);
        }
    }
    //为了每个Item生成对应的View
    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v=LayoutInflater.from(parent.getContext()).inflate(R.layout.item,parent,false);
        return new ViewHolder(v);
    }
    //为ViewHolder中的控件填充值，设置监听
    @Override
    public void onBindViewHolder(ViewHolder holder, final int position) {
        ArticleBean articleBean=list.get(position);//去除List一条数据
        if(articleBean==null)
            return;
        //给条目中的空间设置值
        holder.imageView.setImageResource(articleBean.getImgid());
        holder.tvtitle.setText(articleBean.getTitle());
        holder.tvdescript.setText(articleBean.getDescription());
        holder.tvtime.setText(articleBean.getTime());
        //给条目中的按钮设置监听器
        holder.button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //做出是否删除提示
                list.remove(position);//实际应该操作网络数据库
                notifyDataSetChanged();//刷新数据
            }
        });
        //条目整体的点击事件
        holder.imageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //获取当前条目id
                int id=list.get(position).getArticleId();
                Toast.makeText(context,""+id, Toast.LENGTH_SHORT).show();
            }
        });
    }
    //共有多少条目
    @Override
    public int getItemCount() {
        return list.size();
    }
}
